1. European Monitoring Centre for Drugs and Drug Addiction. Video: What is decriminalisation of drugs? 4 Jun 2015. http://www.emcdda.europa.eu/video/2015/what-is-decriminalisation-of-drugs.
2. National Academies of Sciences, Engineering, and Medicine. The health effects of cannabis and cannabinoids: the current state of evidence and recommendations for research. National Academies Press, 2017. https://www.ncbi.nlm.nih.gov/books/NBK423845/.
3. Association of Cannabis Use in Adolescence and Risk of Depression, Anxiety, and Suicidality in Young Adulthood
4. Global burden of disease attributable to illicit drug use and dependence: findings from the Global Burden of Disease Study 2010
5. European Monitoring Centre for Drugs and Drug Addiction, European School Survey Project on Alcohol and Other Drugs. ESPAD Report 2015—Results from the European School Survey Project on Alcohol and Other Drug. Publications Office of the European Union, Luxembourg: EMCDDA-ESPAD joint publications. 2016. Table of use of cannabis in past 30 days is available at: http://www.espad.org/report/table-66-use-marijuana-or-hashish-during-last-30-days-gender-1995-2015-percentages.